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Planta Med 2009; 75 - PA50
DOI: 10.1055/s-0029-1234375
DOI: 10.1055/s-0029-1234375
Chemical Constituents from Alnus formosana Burk. III. Polar Constituents from Leaves by HPLC-SPE-NMR and Conventional Methods
This continual study was aimed to investigate thoroughly the polar constituents present in the n-BuOH- soluble fraction of the leaves of Alnus formosana. [1] The HPLC-SPE-NMR hyphenated technique was applied for such purpose. This effort led to the characterization of 44 compounds, including thirty diarylheptanoids, ten flavonoids, and a coumaroylxyloside. Of these, seventeen compounds (1-1 7) are new. These compounds were further isolated and the structures were confirmed by general spectroscopic analysis.
References: [1] Lee, S.S. et al. (2006) Nat. Prod. Communications 1:461–464.